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…schemes without the need for expensive pneumatic, electronic, or DDC control systems. The ZRT-SDIL-1 model provides on-off control for on-demand ventilation. This allows central fan downsizing and promotes energy savings…

…airflow control and integral passive regulators for automatic air balancing of the continuous and boost airflow setpoints. This unique combination provides flexible control schemes without the need for expensive pneumatic,…

…airflow control and integral passive regulators for automatic air balancing of the continuous and boost airflow setpoints. This unique combination provides flexible control schemes without the need for expensive pneumatic,…

…a combination grille, register box, control damper, and optional flow regulator(s). This unique combination provides up to four different control schemes without the need for expensive pneumatic, electronic, or DDC…

…is a combination grille, register box, control damper, and optional flow regulator(s). This unique combination provides up to four different control schemes without the need for expensive pneumatic, electronic, or…

…is a combination grille, register box, control damper, and optional flow regulator(s). This unique combination provides up to four different control schemes without the need for expensive pneumatic, electronic, or…

…four different control schemes without the need for expensive pneumatic, electronic, or DDC control systems. By replacing static grilles in large central exhaust systems, the ZRT-FR-1 model provides on-off control…

…to four different control schemes without the need for expensive pneumatic, electronic, or DDC control systems. By replacing static grilles in large central continuous supply systems, the ZRT-FRS-1 model provides…

…expensive pneumatic, electronic, or DDC control systems. The ZRT-3PDIL-HP is primarily used for combination low-flow indoor air quality ventilation or make-up air, and two on-demand high-flow spot ventilation rates using…

…is a combination grille, register box, control damper, and optional flow regulator(s). This unique combination provides up to four different control schemes without the need for expensive pneumatic, electronic, or…